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      02-05-2020, 08:03 PM   #11
X519
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Drives: 2019 X5 xDrive 40i
Join Date: Sep 2018
Location: Texas

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Depending on the TDS content of the water in your area, this may recur if the water is allowed to dry by itself on the vehicle , especially if warm or sunny.

Solutions to counter this in the future are;
1) drying with a clean towel as soon as a section is washed and cleaned.
2) spray -on waxes
3) DI water (can get expensive), especially if TDS levels are quite high.

Edit; this can happen regardless of coating.

Last edited by X519; 02-05-2020 at 08:03 PM.. Reason: Additional info